Dustproof ball screw

Abstract

The utility model belongs to the technical field of ball screw, disclose a dustproof ball screw, including threaded rod, the outer wall threaded connection of threaded rod has ball nut subassembly and cylinder, cylinder is fixed on the side wall of ball nut subassembly, dust cover is connected on the outside wall of cylinder in sliding, dust cover and cylinder are set up respectively corresponding first recess group and second recess group, the first recess group is inserted with first slide column group, the second recess group is inserted with second slide column group, first slide column group and second slide column group top and one side of second slide column group are provided with second spring, the other side of second spring and the side wall of cylinder top, the utility model realizes the quick replacement of dustproof assembly to ball screw, and further improves the maintenance efficiency of equipment.

Description

Technical Field

[0001] This utility model relates to the field of ball screw technology, specifically a dustproof ball screw. Background Technology

[0002] Ball screws are core transmission components in machine tools and precision machinery. They mainly consist of a screw, nut, steel balls, a return device, and sealing components. Their core function is to accurately convert rotary motion into linear motion. They feature high precision, low friction, high efficiency, and reversibility, and are widely used in CNC machine tools, industrial robots, and automation equipment. Dustproof ball screws are improved products based on ordinary ball screws, with the addition of a dustproof structure. By configuring protective components such as dust covers, sealing rings, and dust scraping components, they prevent dust, chips, oil stains, and other contaminants from entering the screw helical groove and ball circulation channel, avoiding obstruction of steel ball rotation and reduction of transmission accuracy, thereby extending the service life of the ball screw. However, in the existing technology, when the dust cover needs to be replaced due to wear, aging or contamination, the main body of the lead screw needs to be disassembled. The operation steps are complicated and it is difficult to replace the dust cover. This results in a long replacement time, which significantly increases the time cost of equipment downtime maintenance and affects production efficiency. Utility Model Content

[0003] The main technical problem to be solved by this utility model is to provide a dustproof ball screw, which enables the quick replacement of the dustproof components of the ball screw, thereby improving the maintenance efficiency of the equipment.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A dustproof ball screw includes a threaded rod, the outer wall of which is threadedly connected to a ball nut assembly and a cylinder. The cylinder is fixed to one side wall of the ball nut assembly. A dust cover is slidably connected to the outer side wall of the cylinder. The dust cover and the cylinder are respectively provided with corresponding first groove groups and second groove groups. A first sliding column group is inserted into the first groove group, and a second sliding column group is inserted into the second groove group. The first sliding column group and the second sliding column group are in contact with each other, and a second spring is provided on one side of the second sliding column group. The other side of the second spring is in contact with the side wall of the cylinder.

[0005] The following are further optimizations of the above technical solution by this utility model: The first groove group includes a first groove, a first circular hole, and a third circular hole, and the second groove group includes a second groove and a second circular hole; the inner diameters of the first circular hole, the second circular hole, and the third circular hole are the same.

[0006] Further optimization: The first sliding column assembly includes a first sliding column, a first slider is provided on the first sliding column, a first spring is fixedly connected to one side of the first slider, the other end of the first spring is abutted against an inner side wall of the first groove, and a handle is also provided on one end of the first sliding column.

[0007] Further optimization: The second sliding column assembly includes a second sliding column, a second slider is provided on one side of the second sliding column, and a second spring is fixedly connected to one side wall of the second slider.

[0008] Further optimization: At least two baffles are also provided on the inner wall of the first groove.

[0009] This utility model adopts the above-mentioned technical solution, which is ingenious in conception and reasonable in structure. Through the cooperation between the second slider, dust cover, handle, first slider and first spring, the dust cover can be replaced, which solves the problem that the protective cover is inconvenient to replace. When the dust cover needs to be replaced, it can be replaced quickly, reducing the downtime for maintenance caused by replacing the dust cover.

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure assembly of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the dust cover in an embodiment of this utility model; Figure 3 This is a schematic diagram of the internal cross-sectional structure of the cylinder in an embodiment of this utility model; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a partial structural diagram of the first spring in an embodiment of this utility model.

[0012] In the diagram: 1. Threaded rod; 2. Ball nut assembly; 3. Cylinder; 31. Second groove; 32. Second round hole; 4. Dust cover; 41. First groove; 42. First round hole; 43. Third round hole; 44. Stop post; 5. First sliding post; 6. Handle; 7. First slider; 8. First spring; 9. Second sliding post; 10. Second slider; 11. Second spring. Detailed Implementation

[0013] like Figure 1-5As shown: A dustproof ball screw includes a threaded rod 1, with a ball nut assembly 2 and a cylinder 3 threadedly connected to the outer wall of the threaded rod 1. The cylinder 3 is fixed to one side wall of the ball nut assembly 2. A dust cover 4 is slidably connected to the outer side wall of the cylinder 3. The dust cover 4 and the cylinder 3 are respectively provided with corresponding first groove groups and second groove groups. A first sliding column group is inserted into the first groove group, and a second sliding column group is inserted into the second groove group. The first sliding column group and the second sliding column group are in contact with each other, and a second spring 11 is provided on one side of the second sliding column group. The other side of the second spring 11 is in contact with the side wall of the cylinder 3.

[0014] The first groove group includes a first groove 41, a first circular hole 42 and a third circular hole 43, and the second groove group includes a second groove 31 and a second circular hole 32. The inner diameters of the first circular hole 42, the second circular hole 32 and the third circular hole 43 are the same.

[0015] The first sliding column assembly includes a first sliding column 5, a first slider 7 is provided on the first sliding column 5, a first spring 8 is fixedly connected to one side of the first slider 7, the other end of the first spring 8 is abutted against an inner side wall of the first groove 41, and a handle 6 is also provided on one end of the first sliding column 5.

[0016] The diameter of the side of the first sliding column 5 is the same as the inner diameter of the first circular hole 42 and the third circular hole 43, and the diameter of the first slider 7 is not greater than the inner diameter of the first groove.

[0017] In this embodiment, the first sliding column 5 is slidably connected in the first circular hole 42 and the third circular hole 43, and the first slider 7 is slidably connected in the first groove 41.

[0018] The second sliding column assembly includes a second sliding column 9, a second slider 10 is provided on one side of the second sliding column 9, and a second spring 11 is fixedly connected to one side wall of the second slider 10.

[0019] The diameter of the side wall of the second sliding column 9 is the same as the inner diameter of the second circular hole 32, and the diameter of the second slider 10 is not greater than the inner diameter of the second groove 31.

[0020] In this embodiment, the second sliding column 9 is slidably connected in the second circular hole 32 and the first circular hole 42, and the ultimate compression length of the second spring 11 is greater than the ultimate compression length of the first spring 8.

[0021] At least two baffles 44 are also provided on the inner sidewall of the first groove 41, and the length of the baffles 44 is the same as the length of the second sliding post 9 in the first circular hole 42.

[0022] In this embodiment, the first spring 8 and the second spring 11 are both in a compressed state initially. That is, under the action of elastic force, the first spring 8 and the second spring 11 push the first slider 7 and the second slider 10 against the inner sidewalls of the first groove 41 and the second groove 31 respectively. The length of the first stop post 44 is less than the limit compression length of the first spring 8 and the second spring 11.

[0023] In the initial state, the ball nut assembly 2 and the cylinder 3 are threadedly connected to the threaded rod 1, and the dust cover 4 is sleeved on the outer wall of the cylinder 3. At this time, the first slider 7 and the second slider 10 are respectively abutted against the inner sidewalls of the first groove 41 and the second groove 31 under the action of the first spring 8 and the second spring 11. At this time, the second sliding column 9 is in the first round hole 42 and the second round hole 32, thereby realizing the fixed locking of the dust cover 4 and the cylinder 3. When the dust cover 4 is damaged or needs to be replaced, simply press the handle 6 to push the first sliding column 5 and the first slider 7 into the first groove 41. Since the first sliding column 5 and the second sliding column 9 are abutted, the second sliding column and the second slider 10 are pushed into the second groove 31 until the first slider 7 abuts against the stop column 44. At this time, the first sliding column 5 is in the first round hole 41 and the second sliding column 9 is in the second round hole 31. The cylinder 3 and the dust cover 4 can be separated from each other, and the dust cover can be slid off the cylinder 3 for replacement, which is convenient for use. Then, the new dust cover 4 is inserted into the cylinder 3. The operator can manually push the second sliding column 9 into the second groove 31, and then completely cover the cylinder 3 with the new dust cover 4. Then rotate the dust cover 4 until the second sliding column 9 enters the first round hole 42 to complete the replacement and installation of the dust cover for easy use.

[0024] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A dustproof ball screw, characterized in that: The device includes a threaded rod (1), the outer wall of which is threadedly connected to a ball nut assembly (2) and a cylinder (3). The cylinder (3) is fixed on one side wall of the ball nut assembly (2). A dust cover (4) is slidably connected to the outer side wall of the cylinder (3). The dust cover (4) and the cylinder (3) are respectively provided with a first groove group and a second groove group. A first sliding column group is inserted into the first groove group, and a second sliding column group is inserted into the second groove group. The first sliding column group and the second sliding column group are in contact with each other, and a second spring (11) is provided on one side of the second sliding column group. The other side of the second spring (11) is in contact with the side wall of the cylinder (3).

2. The dustproof ball screw according to claim 1, characterized in that: The first groove group includes a first groove (41), a first round hole (42) and a third round hole (43), and the second groove group includes a second groove (31) and a second round hole (32); the inner diameters of the first round hole (42), the second round hole (32) and the third round hole (43) are the same.

3. The dustproof ball screw according to claim 2, characterized in that: The first sliding column assembly includes a first sliding column (5), a first slider (7) is provided on the first sliding column (5), a first spring (8) is fixedly connected to one side of the first slider (7), the other end of the first spring (8) is abutted against an inner side wall of the first groove (41), and a handle (6) is also provided on one end face of the first sliding column (5).

4. A dustproof ball screw according to claim 3, characterized in that: The second sliding column assembly includes a second sliding column (9), a second slider (10) is provided on one side of the second sliding column (9), and a second spring (11) is fixedly connected to one side wall of the second slider (10).

5. A dustproof ball screw according to claim 4, characterized in that: At least two baffles (44) are also provided on the inner wall of the first groove (41).

Images